Features: 1) Aluminum clad tube for evaporators and condensers 2) Alloy: 4343/3003, 4045/3003 3) Specification: 20 x 1.5, 22 x 1.27, 25 x 1.5, 20 x 1.3, 20.15 x 1.15, 22 x 1.5, 30 x 1.5, 32 x 1.8 4) Temper: H14, H16, H18, O